Cap closing tool



CAP CLOSING TOOL Filed May 4, 1933 2 Sheets-Sheet 1 17/5 ATTORNEY A ril 28, 1936. J. F. EscH 2,039,272

' CAP CLOSING TOOL Filed May 4, 1933 I 2 Sheets-Sheet 2 INVENTOR ,uasmy [[509 v- BY H49 ATTORNEY Patented 1936 UNITED, STATES PATENT OFFICE.

- 2.019.212 oar omsmd'roor.

Joseph F. swarm Neches, Ten, assignor to The Texas Company, New York, N. 1., a corporation of Delaware Appliciflon May 4, 1933, Serial No. 869,291

heavy metal requiring a tight seal and one which will withstand substantial pressure.

The above and other objects will appear more fully from the following description when considered in connection with the drawings in which:

, Fig. 1 is a plan view of one form of the complete cap attaching apparatus. v

Fig. 2 is an elevational view thereof. I Fig. 3 is a vertical sectional viewthrough the apparatus on the line H'of Fig. 1.

Figs. 4 and 5 are detailed views, illustrating successive steps in the crimping and flanging of a cap in position on a drum head.

The apparatus includes an expander plate B shaped to conform generally to the shape of the cap-C which is to be applied to the drum head D. The plate 6 is in the form of an inverted cup with a cylindrical side wall terminating in a circumferential head 6a. The plate is formed at its central portion with an upstanding spindle shank I for supporting the operating elements of the tool. The plate is provided with a friction device for preventing movement of the plate'over the surface on which it rests fThis may be provided by securing a leather or rubber disk 8 within the I hollow base of the plate as shown. H

The operating mechanism for the seamin'gtool includes a seaming roller l0 rotatably mounted on the lower end of lever II-.'. This lever is pivotally mounted, as indicated at1l2, on an arm l3, rigidly mounted on a centrally disposed sleeve I! supported for rotation by means of the roller bearings I5, on the hub or spindle I on the ex pander plate 6. The roller bearings may be of the usual type. the cones and rollers being held in place as by means. of an assemblybolt 9. The angular position of the lever II and the corresponding position of the seaming roller I 0 with respect to the expander plate 6 is controlled by the cam follower I6 rotatably mounted on the upper end of lever VII and which coacts with a rotatable cam l8 attached to a gear wheel 20 mounted for rotation on the sleeve l 4.

Rotation of the cam i8 is accomplished during 56 rotation of the sleeve ll by means of the large the size of the expander plate 6 prevent any tendency of the plate to turn in the cap being applied.

one revolutions of the drive shaft 32 and seaming roller Ill as it has been found that this relation gear 22 which mesheswith the gear 24 formed on the spindle I, the gear, 22 being supported on the hub of a small gear 26, which has a bearing supporting the same for rotation on a rigid arm 28 formed on the sleeve ll. The gear 26 meshes with 5 an intermediate gear 30 which in turn meshes with the gear 20 connected to the cam ll. Power for rotating the sleeve l4 and the arms I! and 20 carried thereby is through the power drive shaft 32 supplied with a suitable motor or other 10 power or manual operating member (not shown).

The above described apparatus operates as follows:

On rotation of the drive shaft 32 the sleeve I4 is correspondingly rotated, carrying with it arms is II and 28. During this rotation the expander plate 8 is seated within the cap C as shown in Fig. 4. During the initial rotation the seaming roller IQ is spaced from the periphery of the plate 8 a suflicient distance to accommodate the 0 thickness of the metal forming the cap and drum head, the cam l8 and cam follower l6 remaining in contact in the relative positions shown in Fig. l, due to positioning of pin I2 beneath the center of mass of lever ll. As the shaft 32 is rotated in the direction of the arrow, that is,

clockwise, as viewed in Fig. 1, the seaming roller is moved with the sleeve I! about the stationary plate 6, the cam I8 being rotated with the sleeve l4 and also turned slowly'ln a clockwise direction 30 with respect to the cam follower Hi. 'The result is that the lever H is gradually tilted to the position shown in Fig. 4 and then to the position shown in 5, wherein the projecting flange 6a on the platet expands the metal of the cap I In the form of the apparatus disclosed herein the :parts are so constructed and related as to produce one complete revolution of the cam I 8.]

past the cam follower l 6 for approximately forty- 50 of the parts produces a satisfactory seal for the largevdrum caps with which the apparatus is designed to be operated. It will be understood that the eaactsizes and-relation 9f as dlsclfiled are not essential to the operation of the apparatus but under other conditions smaller or larger numbers of rotations oi the drive shait for one operation of the cam would be permissible and in fact more than one cam surface may be provided at I! ii, for example, relatively softer metal is provided for the drum cap or head.

Obviously many modifications and variations of the invention, as hereinbeiore set forth, may be made without departing from the spirit and scope thereof, and therefore only such limitations should be imposed as are contained in the appended claims.

I claim:

1. A capping apparatus comprising a stationary expander plate, a power member supported thereon and rotatable with respect thereto, a crimping tool, means for rotating said crimping tool during rotation of said power member and means including a stationary gear carried by said expander plate !or automatically controlling the position 01 said crimping tool with respect to said expander plate during rotation of said power member.

2. A capping apparatus comprising a stationary expander plate, a power member supported thereon and rotatable with respect thereto, a crimping tool, means for rotating said crimping tool during rotation of said power member, means including a stationary gear carried by said expander plate and a gear supported by and rotatable with said power member for controlling the position of said crimping tool with respect to said expander plate during rotation of said power member.

3. A capping apparatus comprising a broad expander plate adapted to be received in a large cap to be applied to a drum head, a stationary spindle shank formed on said plate and projecting upwardly therefrom, a power member rotatably supported upon said spindle shank, a crimping tool rotatable with said power member and means comprising power transmitting gearing carried by said power member and a non-rotatable gear mounted on said shank for moving said crimping tool toward said expander plate during operation of said power member.

JOSEPH F. ESCH. 

